The brain is very active during sleep, but in distinctly different and measurable ways than when awake. See the attached Wikipedia article, below.
i think brain activity is more than 50 percents
breathing blood pumping brain activity stomach activity kidney and liver activity
You dream because your brain is thinking while sleeping. Why do you see it? Because it's your imagination. Your imagination gets better while sleeping.
Because you are sleeping
You are more relaxed,your brain is at rest.
Covering your head while sleeping does not cause damage to your brain. It is a common myth that covering your head can lead to lack of oxygen or carbon dioxide buildup, but there is no scientific evidence to support this claim. It is safe to cover your head while sleeping if it helps you feel more comfortable or secure.
No, the brain continues to produce electrical activity while a person is asleep. In fact, different stages of sleep are associated with distinct patterns of brain wave activity that can be measured using an electroencephalogram (EEG).
The avergae person burns about 1 calorie per minute sleeping. This is roughly equivalent to sitting still while awake. Almost every activity burns the equivalent or more calories than that.
Bullfrogs can stay alert and active without sleeping by entering a state of rest called "resting wakefulness." During this time, their brain activity decreases, allowing them to rest while remaining aware of their surroundings. This helps them conserve energy and stay vigilant for potential threats.
While the sugar content can raise your metabolism slightly, it is the caffeine (a stimulant) that produces heightened brain activity.
No, sleeping with your head under a blanket does not lead to brain cell loss. However, it may affect air circulation and lead to overheating or decreased oxygen intake, potentially causing discomfort and disrupting sleep quality. It is generally recommended to ensure proper ventilation while sleeping.
your body moves physically while your brain is partly sleeping so your brain cant record what is happining on the outside
It depends on what you mean by "rest." The brain always has different levels of activity; some mental processes may use many areas of the brain while at other times the brain may be not as active. However, the brain is never completely inactive - if it is, then the organism is no longer living. Every bodily function is a result of the brain's work, and even when sleeping, the brain might be very active.